Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Message-ID: <BAY19-F314C20D97A2B353BFFB14BB5630@phx.gbl>
X-Originating-Email: [karlm30 AT hotmail DOT com]
X-Sender: karlm30 AT hotmail DOT com
In-Reply-To: <421C90CA.2000500@kleckner.net>
From: "Karl M" <karlm30 AT hotmail DOT com>
To: cygwin AT cygwin DOT com
Subject: RE: ssh-agent and /tmp/ssh-* removal at logout
Date: Wed, 23 Feb 2005 08:41:13 -0800
Mime-Version: 1.0
Content-Type: text/plain; format=flowed
X-OriginalArrivalTime: 23 Feb 2005 16:42:01.0364 (UTC) FILETIME=[99275D40:01C519C6]
X-IsSubscribed: yes



>From: Jim Kleckner
>Subject: ssh-agent and /tmp/ssh-* removal at logout
>Date: Wed, 23 Feb 2005 06:18:50 -0800
>
>ssh-agent leaves stale directories named /tmp/ssh-xxxx
>that contain the named pipe for authentication.
>These left over directories come about when you log out
>or shut down the computer without stopping ssh-agent
>either by running keychain to shut it down or sending it
>a SIGHUP to exit and clean up.
>
>Could ssh-agent catch the shutdown message and thus
>do the proper cleanup?  What would that entail?
>
>Jim
>
>I noticed that in Karl's script to start keychain:
>  http://sourceware.org/ml/cygwin/2004-03/msg00167.html
>that he removes any /tmp/ssh-* pre-existing and presumed
>stale directories left over by dead ssh-agent processes
>and this assumes that there is only one ssh-agent per machine.
>Not as good as actually getting rid of the source of the
>zombie directories.
>
Actually, it does not assume that there is only one ssh-agent process per 
machine. I routinely use it with ssh-agents processes for multiple users. 
The files for other users are protected so that they can not be deleted. 
Thus, only the current user's tmp files are deleted.

I'm in the process of doing some clean-up work and trying out keychain 
2.5.1. I am also adding ${HOSTNAME}.cmd file creation for use with Windows 
shell scripts. If there is interest, perhaps I should offer to maintain 
keychain, with additional support for launching it from a service. Launching 
keychain from a service allows the ssh-agent process to survive logout, so 
you only type a passphrase once per reboot instead of once per login.

Thanks,

...Karl



--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/